Meet the 'Avit Caulifying, Mastic and Sealant Gun', your superior solution for meticulous sealing tasks. Easily accommodates cartridges as large as 400ml for your convenience. This reliable tool isn't just about size; it also features an essential built-in nozzle clearing spike, cutting down on unnecessary hassle and time delays. From personal home projects to professional jobs, satisfy all your caulking needs with this quality tool designed to serve sizes between 310-400ml.